Make GrCacheable implement its own ref counting.

include/gpu/GrGpuObject.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGpuObject_DEFINED
 #define GrGpuObject_DEFINED
 
@@ skipping 36 matching lines @@
 
     /**
      * Retrieves the context that owns the object. Note that it is possible for
      * this to return NULL. When objects have been release()ed or abandon()ed
      * they no longer have an owning context. Destroying a GrContext
      * automatically releases all its resources.
      */
     const GrContext* getContext() const;
     GrContext* getContext();
 
-    void incDeferredRefCount() const {
-        SkASSERT(fDeferredRefCount >= 0);
-        ++fDeferredRefCount;
-    }
-
-    void decDeferredRefCount() const {
-        SkASSERT(fDeferredRefCount > 0);
-        --fDeferredRefCount;
-        if (0 == fDeferredRefCount && this->needsDeferredUnref()) {
-            SkASSERT(this->getRefCnt() > 1);
-            this->unref();
-        }
-    }
-
-    int getDeferredRefCount() const { return fDeferredRefCount; }
-
-    void setNeedsDeferredUnref() { fFlags |= kDeferredUnref_FlagBit; }
-
     virtual bool isValidOnGpu() const SK_OVERRIDE { return !this->wasDestroyed(); }
 
 protected:
     /**
      * isWrapped indicates we have wrapped a client-created backend object in a GrGpuObject. If it
      * is true then the client is responsible for the lifetime of the underlying backend object.
      * Otherwise, our onRelease() should free the object.
      */
     GrGpuObject(GrGpu* gpu, bool isWrapped);
     virtual ~GrGpuObject();
@@ skipping 36 matching lines @@
          * no one else wants to) but doesn't really want to keep it around.
          */
         kDeferredUnref_FlagBit  = 0x2,
     };
     uint32_t         fFlags;
 
     typedef GrCacheable INHERITED;
 };
 
 #endif